CVE-2026-18467 Paytium - Privilege Escalation

Paytium: Mollie payment forms & donations plugin for WordPress <= 5.0.3 contains a privilege escalation caused by lack of signature verification on pt_cf_checkout_meta filter, letting unauthenticated attackers create admin accounts via payment form submission and payment completion.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.39% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
24 September 2026
Updated
15 October 2026
Weakness
CWE-269

Vendor fix

Update to a version later than 5.0.3 that properly verifies signatures on all payment meta fields.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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